56 lines
1.3 KiB
GDScript3
56 lines
1.3 KiB
GDScript3
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static func map_(
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mapper : Callable = GDRx.basic.identity
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) -> Callable:
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var _mapper = mapper
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var map = func(source : Observable) -> Observable:
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# """Partially applied map operator.
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#
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# Project each element of an observable sequence into a new form
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# by incorporating the element's index.
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#
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# Example:
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# >>> map.call(source)
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#
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# Args:
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# source: The observable source to transform.
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#
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# Returns:
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# Returns an observable sequence whose elements are the
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# result of invoking the transform function on each element
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# of the source.
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# """
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var subscribe = func(
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obv : ObserverBase,
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scheduler : SchedulerBase = null
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) -> DisposableBase:
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var on_next = func(value):
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var result = RefValue.Null()
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if not GDRx.try(func():
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result.v = _mapper.call(value)
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) \
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.catch("Error", func(err):
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obv.on_error(err)
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) \
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.end_try_catch():
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obv.on_next(result.v)
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return source.subscribe(
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on_next, obv.on_error, obv.on_completed,
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scheduler
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)
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return Observable.new(subscribe)
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return map
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static func map_indexed_(
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mapper_indexed : Callable = GDRx.basic.identity
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) -> Callable:
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var _mapper_indexed = mapper_indexed
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return GDRx.pipe.compose2(
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GDRx.op.zip_with_iterable(InfiniteIterable.new()),
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GDRx.op.map(func(i : Tuple): return _mapper_indexed.call(i.at(0), i.at(1)))
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)
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